Screw type clcsure



April 22, i941. s. T. MEM 2,239,238.

scREw TYPE cLosURE Filed April 28, 1939 Patented pr. 22, 1941 UNETED rSTATES j. OFF! CE sonnw TYrncriosuitn* See Thie Liem, The Hague,Netherlands, assigner to D r. Henri Franois lorririga, The Hague,Netherlands i i Application April 2s, 1939, serialNo.. 270,621

In Denmark March 29, 1939- oted on the container or on an annular nut orthe like screwed on to the mouthpiece of the container. Y

Such screw type closures are described in my earlier U. Si. applicationSerial No.205,319 filed April 30,1938. t

According to the invention, which is the subject matter of saidapplication, the part which contains the openings or recesses for takingthe pivots or pins A(about which the loop is rotatable) provided on theloop or on the mouthpiece of the container, is provided with slotsopening into these recesses for allowing the passage (on the fitting inof the loop) of the said pivots or pins, the depth of these slots andthe vdistance apart of the pivot ends being so chosen that the loop canbe tted on the container mouthpiece or on the annular nut Withouttensioning or bending it.

According to the present invention the connec` tion between the loop`and the annular nut is of the type of a bayonet coupling. In this Way areliable connection between the closure member and the annular nut isobtained, preventing loss of the closure member.

According to a feature of the invention, the pivot ends of the loop armsat their inwardly turned ends may be provided with slots, extending frombelow, the pivot holes for the loop pivots comprising pin likeextensions protruding into said slots.

According to a further feature of the invention the upper edge of theseslots may be constituted by a cylindrical surface, which has its yaxisThe valveV body isl indicated with the number 2l. 'On the upper partV'22 of this valve body cap-likeV stopper member 26, provided with asealing disc 2l. When screwing the annular nut 23 with lloop 24 into theclosed position, the disc 21 ispressed against the upper vedge 28 of thevalve body 2 I.

. The loop pins 25, as will be clear from Fig. 4, atl theirinwardlyturned ends are provided with f slots 29., said slots extending upwardlyfrom the lower end of the pins and the upper edges of said slotsconstituting a cylindrical surface having an axis coinciding with theaxis about which the loop can be turned. In these slots 29 pinlikeextensions 30 protrude, provided on the annular nut 23. Said extensionsare located in the centre of the pin holes 3| for the loop (in theannular nut). The upper semi-cylindrical sur-l faces of these pin holes`are lconcentric with respect to the pinlike extensions 30, saidsurfaces. being extended tangentially vertically downward, to the bottomof the nut. The dimensions are? so chosen that the pins of the loop maybe inserted in said pinholes, as is shown in Figs. 1,

and 2.

coinciding wi-th the axis about which the loop m-ay be turned.

Below the pin like extensions according to the invention in the pivotholes for the loop pivots protruding parts may be provided, which in themiddle position of the loop constitute an abutment against turning tothe side.

The invention is illustrated in the `accompanying drawing which shows byway of example in Figs. 1 4 the use of the invention on a valve stem fortires. Figs. 1 and 2 show a front View, partly a cross-section, and aside view of this valve (in Fig. 2 the loop is turned to the side, thefront part of the loop being shown partly removed). Fig. 3 is a viewfrom below, whilst Fig. 4 shows a longitudinal section of the loop ofthe screw stopper.

The loop is xed to the annular nut in the.l following way:

The loop 24 is brought in a Vertical coaxial position with respect tothe annular nut, so that the caplike stopper member 26 will bebelowwhilst the open end of the slots 29 in the loop) pins will bedirected upwardly and towards the pinlike extensions 30 in the annularnut. The: loop is now lifted until the extensions 30 are located in theunder ends of the slots 29, whereupon the loop is turned upwards. Theloop being connected with the annular nut in this way (bayonetcoupling), the latter is screwed o-n the valve member. As will be clearfrom Fig. 2 the loop in this position cannot be removed from the annularnut Without unscrewing the latter.

From' the drawing it m-ay be seen that the screw thread of the Valvebody is interrupted at 32. In the annular slot 32 a suitable ring ofresilient material such 'as rubber may be applied; this ring preventsunscrewing and loss of the annular nut 23.

In order to make the loop spring into the position shown in Fig. 1, orto retain the loop in any position into which it is turned to the side.protruding parts or ribs 33 are provided below pling elements, one ofwhich complementary elements comprises mean-s providing anvopen-endedslot having a rounded innerendmanrlv aspinlike projection Within saidslot concentricj withjzgthe rounded end thereof, the other of whichcomplementary elements comprises a pin'engaging the rounded end of saidslotandffprovidmg an openendedrecess in its ;f-aceengagingqthe pinlikeprojectionV in the slot of Y.said,fi-rst-frnenticned complementary.element -afprojectingffribqin lthe slot of saidfirst-mentionedcornplementaryele ment forr engagement with ,thereess in,thergface of the pin of said l,second-Inentjgnell,(Kllnple mentaryelement `to retain lsaid yokedn; agpredetermined position of rotation.with Ygrespectto saidinut, the open endsyoffsaidgslot andsad recessbeing aligned to permitpthe ,nut;tof;1be,;un coupled from the yokemember.:whilezmaintaining ,the shape of ,theglatten `byafsglidingf-movementi in fone radial positions-10i the-` yokeywithaeaaese respect to its pivotal axis and to prevent uncoupling in allother such positions, and a sealing member carried by said yoke forsealing the opening in said neck portion.

2. A closure for containers having a threaded neck portion terminatingin an opening for the container which comprises a nut elementadaptnedvtoA bexthreaded on the neck of the container,

a v`yoke member having arms embracing said nut and pivotally connectedthereto for swinging movement about an axis transversely of the nut,

-thepivotal -connection between said arms and nut includingcomplementary interlocking cou- Apling v..elements. comprising means on`said nut fprovidingen Yopen-ended slot having a rounded inner -end anda pinlike projection Within said sloty .concentric with the rounded endthereof, a pin carried by said yoke and engaging the rounded end of saidslot, which pin provides an open- -endedrecess in its face engaging thepinlike pro- H--jection in said slot, a projectingribin the slotprovided-finsaid rnut fonengagement With the fr ecessgintheface'vof-f-the--pinrcarried by'said yoke MVA,to retain said yoke Yina predetermined position of .-frotat-ionnwith respectgto said nut, ytheopen ends-of said slot `and said recessbeing aligned to permit the nutto be uncoupled from the yoke memberfwhile maintaining the shape of thelattengby` asliding movement in one radial position of the yoke withrespect to its pivotal axis and to preventuncoupling inv all; other suchpositions, mande afsealling member carried by said yoke for sea-lingthe'openingl in i said neck portion.

THIE,

